<tal:if condition="request/principal/schooltool:authenticated"
        define="app context/schooltool:app"
        i18n:domain="schooltool.intervention">
  <a i18n:translate=""
     class="navigation_header"
     tal:condition="python: len(app['schooltool.schoolyear']) > 0"
     tal:attributes="href string:${app/@@absolute_url}/intervention/intervention.html"
     >Intervention</a>
  <a i18n:translate=""
     class="navigation_header"
     tal:condition="python: len(app['schooltool.schoolyear']) == 0"
     tal:attributes="href string:${app/@@absolute_url}/no_current_term.html"
     >Intervention</a>
</tal:if>
